My Macbook has an error after lid close - lid open:
Macbook is on, and music on. Lid close => music stop
Lid open, the screen looks like the brightness was decreased to minimal, but the music resumes.
Lid close again, this time the music doesn't stop
The only way to quit that situation is reset SMC (Control-Option-Shift + Power)
I have tried the reset of NVRAM (Option-Command-R-P) but no luck.
Reinstall MacOS is also not affect :(